//
//  MFWStringUtils.h
//  MFWSdk
//
//  Created by Song Xiaofeng on 13-7-26.
//  Copyright (c) 2013年 Mafengwo Inc. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface MFWStringUtils : NSObject

+ (BOOL)isEmptyString:(NSString*)string;

+ (NSString*)hmac_sha1:(NSString*)key text:(NSString*)text;

@end
